Mobs Mods for Minecraft Java
Browse 217 free Mobs mods for Minecraft Java — popular picks include Bossbar Expansion, Ea Nasir's Items and Bosses Pack, Blue Depths.
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Bossbar Expansion
This data pack/Mod add bossbar to minibosses in the game like Warden, Elder Guardian and Evoker.
Ea Nasir's Items and Bosses Pack
Introduces new bosses, items, and more!
Blue Depths
This is a datapack that improves the Minecraft ocean and river ecosystem by adding new mobs, blocks, and a brand new ocean boss. The new sea creatures include Orcas, Sharks, Sturgeons, Jellyfish, Catfish, and Tuna
Manifestation of the souls
Manifest your soul as a stand, kill bosses, follow quest lines and find structures
Epic Bosses
A mod for epic bosses in minecraft that adds a lot of unique content.
KinglyBosses
KinglyBosses is a Minecraft plugin for managing custom bosses. It allows summoning powerful bosses, generating custom items, and enabling player spectating. It also offers features like boss lists, spawn zone management, and easy configuration reloading.
Respect Your Elders
Respawn mechanics for Elder Guardian & Evoker mini-bosses
The King and The Queen - Legacy of Utopia
A high-performance 1.12.2 revival of the legendary OreSpawn bosses, featuring a ground-up engine rewrite. Includes the full The King and The Queen roster, a 1.19 Warden backport, and stalking Herobrine mechanics.
Improved Spiders
Adds 4 new types of spiders that can spawn as well as a spider queen boss that spawns in new spider den structures and many new items.

Fortitude
Gain stats upon defeating unique mobs and conquering bosses. Fully configrable/customizable.
Random Bosses
The WASD Random Bosses Datapack turns naturally spawned mobs in the world into bosses. It was inspired by an old mod that is similar in function. Bosses spawn with random power levels, random sizes, and loot based on difficulty.
the hiker
the hiker, a scary mod that adds a new boss named the hiker, it also add a new biome, the hikers forest. and different variants of the hiker!
Biomes Of The Ancients
A Realm RPG mod that aims to overhaul Minecraft entirely, adding new bosses, biomes, mobs, dimensions, tools, weapons, etc. With a lot of lore to invest into.
Pirate Adventures
Pirates is a huge project for the Minecraft game in the form of a DataPack. By installing the required ResourcePack and the DataPack itself, you get a large number of new mobs, items, blocks, mechanics, and bosses.
RSMC: The Third Age (RuneScape in Minecraft)
RSMC: The Third Age is a Minecraft MOD that brings RuneScape to your Minecraft Worlds. RSMC can be played in Single Player or Multiplayer. It adds 24 Skills, Trading, GE, Bossing, Mini Games, Dungeons, and so much more
The Dulling - A Final Challenge
Adds an eldritch threat to your world, with Bosses, Dimensions, Magic, & more!

ScalingMobs
Adjusts the stats of bosses and mobs, multiplied by the number of players on the server.

BossCraft Respawn : Overlord
Unofficial Port of BossCraft and BossCraft2 Content
Grace999
GracePlugin provides configurable, per-world grace periods with PvP and mob damage protection, boss bar countdowns, sound alerts, and customizable safe zone regions with flag-based protections.

Vital
A mod which adds clean, minimal, but readable SHADER COMPATIBLE health bars to each mob in the game (optionally replacing boss bars with colour coded bars per active boss too).
Diary of an 8-Bit Warrior
Experience Aetheria like a Terrarian! Complete quests, kill bosses, and level up your skills! Maybe you'll even meet Runt and his friends…
Piglin Wither
Adds a new piglin wither boss
Harry's Hostile Expansion
Adds many different hostile mobs, mechanics, structures & bosses.
Nice Blockhead Mobs
Adds cute, little Mobs (and 1 new Boss) made out of Miniblocks. No Ressource Pack required.
DAG Mod
Race & class system, 200-level progression, custom dungeons, boss battles, two custom dimensions, NPC quests, party play, and craftable consumables with real combat effects. Everything in one mod.
Journey to the North-East
A combat focused datapack that revolves around powerful new weaponry and deadly bosses.
The Dulling
A Cosmic Horror Story with Bosses, Dimensions, Magic, and more!

Calamity
Calamity is an expansive overhaul project that introduces challenging new bosses, unique mechanics, and a rich layer of lore to the core experience.
Wands & Wizardry
Bringing Noita's spell system to Minecraft with fully modular wands, over 60 spells, a new boss fight and more!
Bosscraft 2: Remake
Bosscraft 2: Remake is an unofficial project inspired by Sthullen's famous mod for older and outdated versions of Minecraft. This project takes the iconic mechanics of the classic mod and integrates them into modern versions of the game.
Mechanical Bosses
A mod by Yolo1324
Ivar's Bosses
Ivar's Bosses is a mod that introduces formidable bosses to the game, featuring unique attack patterns and special summoning rituals. These ancient creatures will unleash their wrath upon anyone who dares disturb their eternal slumber.
RogueCraft Plus
An addon to the RogueCraft datapack! Adds new abilities, structures and a boss!
More And Ore
More And Ore Contains an increasing amount of Content, Beginning with Ores and Items as well as Various Armors, Tools and Weapons, as well as Exponential amounts of New Features, Mobs, Bosses and Difficulty increasing Modifications!
Theosis
Plugin-ready RPG survival with loot, gems, bosses & biomes. Thesis-style modularity. Multilanguage Apotheosis-inspired
GahoodRPG
Adds RPG elements to minecraft which includes classes, armor, weapons, bosses, and more.